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Regulation of Food Intake

Regulation of Food Intake

Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...

Neural Regulation

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Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.

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Tetrahydrocannabinol (THC) is a phytocannabinoid that primarily interacts with the CB1 receptor, a type of G protein-coupled receptor (GPCR) predominantly in and around the chemoreceptor trigger zone (CTZ) and emetic center. THC also blocks the serotonin receptor activity in the dorsal vagal complex (DVC) by inhibiting serotonin release. THC exerts its anti-emetic effects through these interactions, which are beneficial for patients undergoing chemotherapy.
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Hormonal Regulation

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Regulation of the Digestive System

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Digestive activity regulation hinges on three primary components. Activation is prompted by a multitude of mechanical and chemical indicators, primarily detected by receptors within the stomach and intestines' walls. These receptors predominantly respond to factors such as mechanical stretching of the organ walls, changes in pH and osmolarity, and the presence of digesting materials and their by-products.
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Related Experiment Video

Updated: Jul 4, 2026

Quantifying Food Intake in Caenorhabditis elegans by Measuring Bacterial Clearance

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Published on: February 23, 2024

[Cannabinoid system and feeding regulation].

Francisco Arias Horcajadas¹

¹Unidad de Psiquiatría. Fundación Hospital Alcorcón. 28922 Alcorcón (Madrid). farias@fhalcorcon.es

|June 14, 2008

Summary

This summary is machine-generated.

The cannabinoid system regulates feeding and metabolism, with hyperactivity linked to obesity. A new drug, rimonabant, targets this system for obesity and metabolic syndrome treatment.

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Area of Science:

Endocrinology and Metabolism
Neuroscience

Context:

The endocannabinoid system plays a key role in regulating appetite and energy balance.
Obesity is a growing global health concern associated with metabolic dysfunction.
Rimonabant, a cannabinoid antagonist, is being developed for obesity treatment.

Purpose:

To review the role of the cannabinoid system in feeding and metabolism.
To discuss the therapeutic potential of rimonabant for obesity and metabolic syndrome.
To present genetic and localization studies of cannabinoid receptors in eating disorders and obesity.

Summary:

Evidence suggests the cannabinoid system is vital for controlling feeding and metabolism.
Cannabinoid hyperactivity, identified in obesity, may serve as a prognostic factor.
Rimonabant demonstrates weight-loss effects and improves lipid and glucidic metabolism in metabolic syndrome.

Impact:

Highlights the therapeutic potential of targeting the cannabinoid system for obesity and metabolic disorders.
Suggests cannabinoid hyperactivity as a potential biomarker for obesity prognosis.
Provides insights into the neurobiological underpinnings of appetite regulation and metabolic control.